.box{
    width: 350px;
    height: 800px;
    background-color: #ffffff;
    color: white;
}
.demo04{
    width: 300px;
    height: auto;
    background-color: #000000;
}
.name{
    width: 350px;
    color: #000000;
    display: block;
    text-indent:50px;
    font-wight: bold;
}
.price{
    width: 350px;
    color: red;
    text-indent: 50px;
    display: block;
}
.buy{
    background-color: #2b8afb;
}